title: Statistics notes. Weighted comparison of means.
authors.affiliation: Department of Public Health Sciences, St George's Hospital Medical School, London.
authors.forename: J M
authors.initials: JM
authors.lastname: Bland
authors.forename: S M
authors.initials: SM
authors.lastname: Kerry
mesh_terms: D000704:Analysis of Variance; D005194:Family Practice / Q000706:statistics & numerical data; D011859:Radiography / Q000706:statistics & numerical data; D016032:Randomized Controlled Trials as Topic; D013223:Statistics as Topic